A fixed-length cutting device and method for the production of a distribution pipe of a new energy vehicle engine

Abstract

The present invention discloses a fixed-length cutting device and method for producing a distribution pipe of a new energy vehicle engine, including a workbench and a distribution pipe body, and the distribution pipe body is bundled into a tube bundle by a steel strip; a plurality of first cuttings are evenly arranged on the workbench, and the first cuttings are arranged along the width direction of the workbench; a rotatable first hinge block and a movable second hinge block are respectively arranged at both ends of the first cutting; a roller is jointly rotatably connected to the upper parts of the first hinge block and the second hinge block corresponding to the same first cutting inside; the distribution pipe body is arranged on the roller, and the distribution pipe body is arranged along the length direction of the workbench; when cutting the distribution pipe body bundled by a steel strip, it is directly cut by a cutting machine in cooperation with a rotatable roller, without disassembling it and cutting the distribution pipe body one by one, having the efficiency of large-scale cutting of the distribution pipe body, which is convenient and fast.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive parts, and particularly relates to a fixed-length cutting device and method for the production of an engine manifold for a new energy vehicle. Background Art

[0002] The range extender engine (also known as a hybrid or electric range extender engine) is one of the trends in future automotive development. It combines a traditional internal combustion engine and an electric power system, which can significantly improve fuel economy and reduce emissions. Against this background, the engine manifold, as one of the key engine components, also faces new development prospects and challenges.

[0003] Among them, the preparation of the engine manifold mainly includes the following steps: raw material inspection → cold rolling and degreasing → endoscope and ultrasonic flaw detection → fixed-length cutting → flat head, chamfering, and boring → ultrasonic cleaning → straightness full inspection → inner and outer wall full inspection → finished product inspection → packaging and boxing → warehousing and storage.

[0004] In the fixed-length cutting step of the engine manifold preparation, the distance between the cutting device and the fixed point is often set to enable the manifold to achieve the purpose of cutting a fixed length during the cutting process to meet the needs of automotive use.

[0005] Patent CN220372332U discloses a fixed-length cutting device for stainless steel pipes. By separating the cutting part and the measuring part, it effectively maintains the product length specification, keeps the size stable, avoids the phenomenon of uneven lengths, and can achieve fixed-length cutting of a steel pipe. In the technical solution of this patent, although the pipe can be cut to a fixed length, the cutting of the pipe needs to be completed step by step, resulting in low efficiency.

[0006] Patent CN118455614A discloses a fixed-length cutting device and process for precision seamless steel pipes. By setting a plurality of support plates and cutting mechanisms on the support plates, it can simultaneously achieve multi-segment cutting of multiple steel pipes. In the technical solution of this patent, multiple cutting machines are used to cut multiple pipes simultaneously, which improves the cutting efficiency of the pipes to a certain extent.

[0007] In the technical solutions of the above patents, fixed-length cutting of pipes has been achieved. However, in actual application, pipes are usually transported to the cutting workshop in the form of being bundled with steel strips (as shown in Figure 8 and Figure 9 ), and after being disassembled, the cutting operation is carried out, which is rather cumbersome. Therefore, although the current technical solutions have improved the fixed-length cutting efficiency of pipes to a certain extent, there are still some deficiencies. Summary of the Invention

[0008] The object of the present invention is to provide a fixed-length cutting device and method for the production of an engine distribution pipe of a new energy vehicle, so as to solve the technical problem in the prior art that when cutting the distribution pipe packed with a steel belt, it is necessary to disassemble it before fixed-length cutting, resulting in a reduction in the cutting efficiency of the distribution pipe.

[0009] The object of the present invention can be achieved by the following technical solutions:

[0010] A fixed-length cutting device for the production of an engine distribution pipe of a new energy vehicle, comprising a workbench and a distribution pipe body, and the distribution pipe body is packed into a tube bundle with a steel belt; a plurality of first cutouts are evenly arranged on the workbench, and the first cutouts are arranged along the width direction of the workbench; a rotatable first hinge block and a movable second hinge block are respectively arranged at both ends of the first cutout; a roller is jointly rotatably connected to the upper parts of the first hinge block and the second hinge block corresponding to the same first cutout inside; the distribution pipe body is arranged on the roller, and the distribution pipe body is arranged along the length direction of the workbench; one end of the roller is fixedly connected with a transmission component, and the transmission component is used to drive the roller to rotate.

[0011] Preferably, the transmission component includes a transmission gear fixedly arranged at the end of the roller; a second cutout is opened at a position on the workbench close to the transmission gear, and the second cutout is arranged along the length direction of the workbench; first driving gears are rotatably connected to both ends of the second cutout through a shaft rod; a first chain is rotatably connected between the first driving gears, and the outer side of the upper part of the first chain is meshed with the transmission gear; a first motor is fixedly arranged on the workbench.

[0012] Preferably, the transmission component includes a second chain rotatably connected to each transmission gear, and the transmission gear is meshed with the inner side of the second chain; a second driving gear is rotatably connected to the position of the second chain corresponding to the outermost transmission gear; a second motor is fixedly arranged on the workbench.

[0013] Preferably, a horizontally arranged fixed shaft is penetrated through the lower end of the first hinge block, the fixed shaft is arranged along the length direction of the workbench, and both ends are fixedly connected with the workbench; corresponding telescopic cylinders are arranged below the second hinge blocks, and the output ends of the telescopic cylinders are rotatably connected to the lower ends of the corresponding second hinge blocks; fixed rods are fixedly connected to the positions corresponding to the telescopic cylinders below the workbench; the fixed rods are rotatably connected to the lower parts of the telescopic cylinders.

[0014] Preferably, guide plates are fixedly connected to the positions on both sides of the first cutout on the upper surface of the workbench, one end of the guide plate close to the first driving gear is higher, the other end is lower, and the angle between the upper inclined surface and the workbench surface is set to 3°-8°.

[0015] Preferably, one end of the workbench is provided with a limiting plate; a fixing block is fixedly connected to the position of the workbench corresponding to the limiting plate; a chute is opened in the middle of the fixing block; a sliding rod is slidably connected in the chute, and the sliding rod is in a bent structure; a lead screw is rotatably connected in the chute; a hand wheel is fixedly connected to the position of the lead screw corresponding to the outside of the fixing block.

[0016] Preferably, a method for sizing and cutting a distribution pipe for a new energy vehicle engine, comprising the following steps:

[0017] S1: Lift or roll the distribution pipe body bundled with steel strips onto the workbench so that one of its edges contacts the rubber layer on the roller.

[0018] S2: Use the first motor to drive all the rollers to rotate synchronously, and use the forward and reverse rotation of the rollers to adjust the bundle of distribution pipe bodies formed to near the cutting line on the workbench.

[0019] S3: Adjust the position of the limiting plate through the hand wheel, and then finely adjust the position of the bundle of distribution pipe bodies formed by the rollers so that its end abuts against the limiting plate, and each roller contacts the corresponding steel strip.

[0020] S4: Adjust the positions of the cutting machines so that the positions of the cutting machines are directly opposite to the cutting line positions between the guiding plates.

[0021] S5: Use each cutting machine to cut the bundle of distribution pipe bodies at the same time, so as to complete the rapid sizing and cutting of the distribution pipe bodies without disassembling the steel strips.

[0022] S6: Remove the sized and cut distribution pipe bodies from the workbench.

[0023] Preferably, in step S3, after fixing the bundle of distribution pipe bodies, adjust the position of the cutting machine so that it is at the position of the cutting line, and then cut the distribution pipe bodies of different fixed lengths.

[0024] Preferably, in step S3, the telescopic cylinder drives the second hinge block at the corresponding cutting line to move downward, so that the roller at the cutting line rotates by an angle of 4° - 9°. After one end of the roller deflects, the roller loses contact with the distribution pipe body, so that the roller loses the load on the distribution pipe body, and there is a gap between the roller and the distribution pipe body at this time.

[0025] Preferably, in the step S6, the distribution pipe body is divided into multiple bundles of tubes after cutting. By adjusting the telescopic cylinders corresponding to the positions of the bundles of tubes, the output ends of all the telescopic cylinders located here are moved downward, thereby driving the corresponding rollers to rotate. When the rotation angle of the roller is greater than the inclination angle of the guide plate, the bundle of tubes in this section loses the support of all the rollers and thus falls onto the guide plate. At this time, the bundle of tubes slides on the guide plate by its own gravity and thus automatically falls onto the collection device beside it.

[0026] Advantages of the present invention:

[0027] 1) When cutting the distribution pipe body packed with steel belts in the present invention, it directly uses a cutting machine in cooperation with rotatable rollers for cutting, without disassembling it and cutting the distribution pipe body one by one. It has the efficiency of large-scale cutting of the distribution pipe body, which is convenient and fast.

[0028] 2) The present invention can drive the second hinge block at the cutting line to move downward through the telescopic cylinder, thereby causing the roller located there to rotate at an angle. After one end of the roller deflects, the roller loses contact with the distribution pipe body, and the roller can no longer carry the distribution pipe body. At this time, there is a gap between the roller and the distribution pipe body. When the cutting machine cuts it, there will be no accidental contact, which may cause damage to the roller, facilitating the cutting machine to cut the distribution pipe body.

[0029] 3) The present invention uses a cutting machine to cut the bundles of tubes formed by packing multiple distribution pipe bodies at the same time, without disassembling the steel belts on them. It not only improves the cutting efficiency but also saves the steps of repeatedly adjusting the positions of the distribution pipe bodies, further improving the cutting efficiency. In addition, after cutting, the steel belts can continue to tie the cut distribution pipe bodies tightly without re-fixing, which not only saves resources but also improves the speed of the subsequent packaging and boxing process.

[0030] 4) The distribution pipe body in the present invention is divided into multiple bundles of tubes after cutting. At this time, by adjusting the telescopic cylinders corresponding to the positions of the bundles of tubes, the output ends of all the telescopic cylinders located there are moved downward, thereby driving the corresponding rollers to rotate. When the rotation angle of the roller is greater than the inclination angle of the guide plate, the bundle of tubes in this section loses the support of all the rollers and thus falls onto the guide plate. At this time, the bundle of tubes slides on the guide plate by its own gravity and thus automatically falls onto the collection device beside it, which is fast and convenient and improves the cutting efficiency of the distribution pipe body. Description of the Drawings

[0031] The present invention will be further described below with reference to the drawings.

[0032] Figure 1 It is a schematic diagram of the overall structure of the first embodiment in the present invention;

[0033] Figure 2 is Figure 1 The partial enlarged view at position A in

[0034] Figure 3 is the sectional view of the first embodiment in the present invention;

[0035] Figure 4 is the schematic structural diagram of the limiting plate of the first embodiment in the present invention;

[0036] Figure 5 is the side view of the first embodiment in the present invention;

[0037] Figure 6 is the schematic structural diagram of the rotating roller of the first embodiment in the present invention;

[0038] Figure 7 is the schematic structural diagram of the transmission component of the second embodiment in the present invention;

[0039] Figure 8 is the upper view of the tube bundle structure formed after packing the distribution pipe body in the prior art;

[0040] Figure 9 is the side view of the tube bundle structure formed after packing the distribution pipe body in the prior art;

[0041] In the figure: 1, workbench; 2, first incision; 3, first hinge block; 31, fixed shaft; 4, second hinge block; 5, rotating roller; 6, transmission gear; 611, second incision; 612, first driving gear; 613, first chain; 614, first motor; 621, second chain; 622, second driving gear; 623, second motor; 7, telescopic cylinder; 8, fixed rod; 9, guide plate; 10, distribution pipe body; 11, steel belt; 12, fixed block; 13, limiting plate; 14, sliding rod; 15, sliding groove; 16, lead screw; 17, hand wheel. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] Embodiment 1:

[0044] Please refer to Figure 1 and Figure 5As shown in the figure, a fixed-length cutting device and method for the production of a distribution pipe of a new energy vehicle engine, including a workbench 1 and a distribution pipe body 10; a plurality of first cutouts 2 are evenly arranged on the workbench 1, and the first cutouts 2 are arranged along the width direction of the workbench 1; rotatable first hinge blocks 3 and movable second hinge blocks 4 are respectively arranged at both ends of the first cutout 2; the upper parts of the first hinge block 3 and the second hinge block 4 corresponding to the same first cutout 2 are jointly rotatably connected with a roller 5, and a rubber layer is arranged on the outer surface of the roller 5 for protecting the carried distribution pipe body 10; the distribution pipe body 10 is arranged on the roller 5, and the distribution pipe body 10 is arranged along the length direction of the workbench 1, and a plurality of distribution pipe bodies 10 are tied and fixed into a regular hexagon structure by a steel belt 11.

[0045] Please refer to again Figure 1 、 Figure 2 and Figure 3 As shown in the figure, one end of the roller 5 is fixedly connected with a transmission component, and the transmission component is used to drive each roller 5 to rotate, so as to adjust the position of the distribution pipe body 10; the transmission component includes a transmission gear 6 fixedly arranged at the end of the roller 5; a second cutout 611 is opened at a position of the workbench 1 close to the transmission gear 6, and the second cutout 611 is arranged along the length direction of the workbench 1; both ends of the second cutout 611 are rotatably connected with a first driving gear 612 through a shaft rod; a first chain 613 is rotatably connected between the first driving gears 612, and the outer side of the upper part of the first chain 613 is meshed with the transmission gear 6; a first motor 614 is fixedly arranged on the workbench 1, and the output end of the first motor 614 is connected with the shaft rod connecting the first driving gear 612.

[0046] Please refer to again Figure 3 and Figure 4 As shown in the figure, a horizontally arranged fixed shaft 31 is penetrated through the lower end of the first hinge block 3, and the fixed shaft 31 is arranged along the length direction of the workbench 1 and is fixedly connected with the workbench 1 at both ends.

[0047] Please refer to again Figure 3 、 Figure 5 and Figure 6 As shown in the figure, corresponding telescopic cylinders 7 are arranged below the second hinge block 4, the output end of the telescopic cylinder 7 is rotatably connected with the lower end of the corresponding second hinge block 4; a fixed rod 8 is fixedly connected to the position of the workbench 1 corresponding to the telescopic cylinder 7; the fixed rod 8 is rotatably connected with the lower part of the telescopic cylinder 7.

[0048] Please refer to again Figure 3 、 Figure 4 and Figure 5 As shown in the figure, guide plates 9 are fixedly connected to the positions on both sides of the first cutout 2 on the upper surface of the workbench 1, one end of the guide plate 9 close to the first driving gear 612 is higher, the other end is lower, and the angle between the upper inclined surface and the surface of the workbench 1 is set to 3° - 8° (such asFigure 3 As shown, in this embodiment, ∠B = 5°).

[0049] Please refer to again Figure 4 As shown, at one end of the workbench 1, a limiting plate 13 is provided, and this limiting plate 13 is used to limit the position of the distribution pipe body 10; a fixing block 12 is fixedly connected to the position of the workbench 1 corresponding to the limiting plate 13; a chute 15 is opened in the middle of the fixing block 12; a sliding rod 14 is slidably connected in the chute 15, and this sliding rod 14 is in a bent structure, and the upper end of the sliding rod 14 is connected to the limiting plate 13; a lead screw 16 is rotatably connected in the chute 15, and the lead screw 16 is threadedly connected to the lower end of the sliding rod 14; a hand wheel 17 is fixedly connected to the position of the lead screw 16 corresponding to the outside of the fixing block 12.

[0050] To facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below:

[0051] When cutting the bundle of distribution pipe bodies 10 tied into a regular hexagon using the steel strip 11, the following steps are included:

[0052] S1: First, hoist or roll it onto the workbench 1 so that one of its side edges contacts the rubber layer on the rotating roller 5;

[0053] S2: Drive the first driving gear 612 to rotate by the first motor 614. The first driving gear 612 drives each transmission gear 6 to rotate through the first chain 613, and the transmission gear 6 drives all the rotating rollers 5 to rotate synchronously. By the forward and reverse rotation of the rotating rollers 5, the bundle formed by multiple distribution pipe bodies 10 is adjusted to the approximate position on the workbench 1;

[0054] S3: Rotate the lead screw 16 by the hand wheel 17, and use the cooperation of the lead screw 16, the chute 15 and the sliding rod 14 to adjust the position of the limiting plate 13, and then use the rotating roller 5 to finely adjust the position of the bundle formed by the distribution pipe bodies 10 again, so that its end abuts against the limiting plate 13, and each rotating roller 5 contacts the corresponding steel strip 11, thereby completing the position adjustment of the distribution pipe body 10;

[0055] S4: Adjust the positions of the various cutting machines so that the positions of the cutting machines are directly opposite to the positions between the guide plates 9;

[0056] S5: Use the various cutting machines to cut the bundle formed by the distribution pipe bodies 10 at the same time, so as to complete the rapid fixed-length cutting of the distribution pipe bodies 10 without disassembling the steel strip 11;

[0057] S6: Take the distribution pipe body 10 after completing the fixed-length cutting off the workbench 1.

[0058] In step S1, devices such as a gantry or a driving roller can be used to transfer it to the workbench 1. The roller 5 on the workbench 1 is used to complete the position adjustment and loading and unloading of the tube bundle formed by the distribution pipe body 10. The rubber layer on the roller 5 protects the contacted distribution pipe body 10 and the steel strip 11 to avoid local damage.

[0059] In step S2, after placing the tube bundle formed by the distribution pipe body 10 on the roller 5, the roller 5 is rotated to drive it to shift, and the position of the steel strip 11 thereon is brought close to the corresponding roller 5, thereby completing the preliminary position adjustment of the tube bundle formed by the distribution pipe body 10, which is convenient for subsequent fixed-length cutting.

[0060] In step S3, since the lengths of the distribution pipe bodies 10 required for different vehicle models are different (such as Figure 5 and Figure 8 the cutting lines A and B shown), when cutting the distribution pipe body 10, it is often necessary to cut out different lengths. In the solution of the present invention, after fixing the tube bundle formed by the distribution pipe body 10, the position of the cutting machine (such as a reciprocating saw, a grinding wheel, a laser cutting machine) can be adjusted to make it at the position of the cutting line, and then it is cut, which is simple and convenient and is convenient for processing distribution pipe bodies 10 of different specifications.

[0061] Among them, since the position of the roller 5 is a fixed pitch and cannot be adjusted, if the position of the required cutting line just coincides with the position of the roller 5, it may cause damage to the roller 5 by the cutting machine. In the solution of the present invention, the second hinge block 4 at this place can be driven to move downward by the telescopic cylinder 7, so that the roller 5 at this place rotates at an angle, and the deflection angle can be set to about 4°-9°. After one end of the roller 5 deflects, the roller 5 loses contact with the distribution pipe body 10, and the roller 5 can no longer carry the distribution pipe body 10. At this time, there is a gap between the roller 5 and the distribution pipe body 10. When the cutting machine cuts it, it will not be mis-touched, so as to cause damage to the roller 5, which is convenient for the cutting machine to cut the distribution pipe body 10.

[0062] Among them, since the driving gear 6 at this place also deflects correspondingly after the roller 5 deflects, but since the driving gear 6 in this embodiment meshes with the outer side of the upper part of the first chain 613, it can directly lose the meshing effect after deflection and will not affect the rotation of other rollers 5, thus avoiding affecting the cutting of the distribution pipe body 10.

[0063] In step S3, if it is necessary to cut the distribution pipe body 10 into different specifications, it is inconvenient to fix the position of the distribution pipe body 10. In the solution of the present invention, by rotating the screw rod 16 with the hand wheel 17, the screw rod 16 and the slide rod 14 cooperate with each other to adjust the initial position of the limiting plate 13. By using the limiting plate 13, the operator can easily limit the position of the bundle formed by the distribution pipe body 10, which is convenient for later fixed-length cutting.

[0064] In step S5, since the bundle formed by packing multiple distribution pipe bodies 10 is cut simultaneously by the cutting machine, it is not necessary to disassemble the steel belt 11 thereon. This not only improves the cutting efficiency but also saves the step of repeatedly adjusting the position of the distribution pipe body 10, further improving the cutting efficiency. In addition, after cutting, the steel belt 11 can continue to tie the cut distribution pipe body 10 without re-fixing, which not only saves resources but also improves the speed of the subsequent packaging and boxing process.

[0065] In step S6, after the distribution pipe body 10 is cut into multiple bundles, at this time, by adjusting the telescopic cylinder 7 at the corresponding bundle position, the output ends of all the telescopic cylinders 7 at that place move downward, thereby driving the corresponding roller 5 to rotate. When the rotation angle of the roller 5 is greater than the inclination angle of the guide plate 9 (i.e., ∠A is greater than ∠B), the bundle at this section loses the support of all the rollers 5 and thus falls onto the guide plate 9. At this time, the bundle slides on the guide plate 9 by its own gravity and thus automatically falls onto the side collection device (such as a forklift and a jaw, etc.), which is fast and convenient and improves the cutting efficiency of the distribution pipe body 10.

[0066] Embodiment 2:

[0067] Please refer to again Figure 7 As shown, the present invention is a fixed-length cutting device and method for the production of a distribution pipe of a new energy vehicle engine. This embodiment is basically the same as that of Embodiment 1, except that in this embodiment, the transmission assembly includes a second chain 621 rotatably connected to each transmission gear 6, and the transmission gear 6 meshes with the inner side of the second chain 621; a second driving gear 622 is rotatably connected to the position of the second chain 621 corresponding to the outermost transmission gear 6, and the second driving gear 622 meshes with the second chain 621; a second motor 623 is fixedly arranged on the workbench 1, and the output end of the second motor 623 is connected to the second driving gear 622.

[0068] After the rotating roller 5 deflects, the transmission gear 6 located there also deflects accordingly. However, since the transmission gear 6 in this embodiment meshes with the inner side of the second chain 621, and the rotation angle of the rotating roller 5 is small, only 4°-9°, even if the angles of any one or more of these transmission gears 6 change slightly, these transmission gears 6 can still mesh with the second chain 621, without affecting the rotation of other transmission gears 6, thus avoiding affecting the cutting of the distribution pipe body 10.

[0069] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0070] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixed-length cutting device for the production of a distribution pipe of a new energy vehicle engine, comprising a workbench (1) and a distribution pipe body (10), and the distribution pipe body (10) is bundled with a steel strip (11); Characterized in that: A plurality of first cutouts (2) are evenly arranged on the workbench (1), and the first cutouts (2) are arranged along the width direction of the workbench (1); A rotatable first hinge block (3) and a movable second hinge block (4) are respectively arranged at both ends of the first cutout (2); The upper parts of the first hinge block (3) and the second hinge block (4) corresponding to the same first cutout (2) are jointly rotatably connected with a roller (5); The distribution pipe body (10) is arranged on the roller (5), and the distribution pipe body (10) is arranged along the length direction of the workbench (1); One end of the roller (5) is fixedly connected with a transmission assembly, and the transmission assembly is used to drive the roller (5) to rotate; The transmission assembly includes a transmission gear (6) fixedly arranged at the end of the roller (5); A second cutout (611) is opened at a position of the workbench (1) close to the transmission gear (6), and the second cutout (611) is arranged along the length direction of the workbench (1); Both ends of the second cutout (611) are rotatably connected with a first driving gear (612) through a shaft rod; A first chain (613) is rotatably connected between the first driving gears (612), and the outer side of the upper part of the first chain (613) is meshed with the transmission gear (6); A first motor (614) is fixedly arranged on the workbench (1).

2. The fixed-length cutting device for the production of the distribution pipe of a new energy vehicle engine according to claim 1, wherein: A horizontally arranged fixed shaft (31) is penetrated through the lower end of the first hinge block (3), and the fixed shaft (31) is arranged along the length direction of the workbench (1), and both ends are fixedly connected with the workbench (1); Corresponding telescopic cylinders (7) are arranged below the second hinge block (4), and the output end of the telescopic cylinder (7) is rotatably connected with the lower end of the corresponding second hinge block (4); A fixed rod (8) is fixedly connected to the position of the workbench (1) corresponding to the telescopic cylinder (7); The fixed rod (8) is rotatably connected with the lower part of the telescopic cylinder (7).

3. A fixed-length cutting device for the production of a distribution pipe of a new energy vehicle engine according to claim 1, characterized in that: Guide plates (9) are fixedly connected to the positions on both sides of the first cutout (2) on the upper surface of the workbench (1), and one end of the guide plate (9) close to the first driving gear (612) is higher, and the other end is lower, and the angle between the upper inclined surface and the surface of the workbench (1) is set to 3° - 8°.

4. A fixed-length cutting device for the production of a distribution pipe of a new energy vehicle engine according to claim 1, characterized in that: A limiting plate (13) is arranged at one end of the workbench (1); A fixed block (12) is fixedly connected to the position of the workbench (1) corresponding to the limiting plate (13); A chute (15) is opened in the middle of the fixed block (12); A slide bar (14) is slidably connected in the chute (15), and the slide bar (14) has a bent structure; A lead screw (16) is rotatably connected in the chute (15); A hand wheel (17) is fixedly connected to the position of the lead screw (16) corresponding to the outside of the fixed block (12).

5. A method for fixed-length cutting in the production of an engine distribution pipe for a new energy vehicle, applicable to the fixed-length cutting device for the engine distribution pipe of a new energy vehicle described in any one of claims 1-4, characterized in that: Including the following steps: S1: Hoist or roll the distribution pipe body (10) bundled with a steel strip (11) onto the workbench (1) so that one of its edges contacts the rubber layer on the roller (5); S2: Drive all the rollers (5) to rotate synchronously by using the first motor (614), and adjust the tube bundle formed by multiple distribution pipe bodies (10) to the vicinity of the cutting line on the workbench (1) by the forward and reverse rotation of the rollers (5); S3: Adjust the position of the limit plate (13) through the handwheel (17), and then finely adjust the position of the tube bundle formed by the distribution pipe bodies (10) by using the rollers (5) so that its end abuts against the limit plate (13), and each roller (5) is in contact with the corresponding steel strip (11); S4: Adjust the positions of the respective cutting machines so that the positions of the cutting machines are directly opposite to the cutting line positions between the guide plates (9); S5: Simultaneously cut the tube bundle formed by the distribution pipe bodies (10) by using the respective cutting machines, so as to complete the rapid cut-to-length cutting of the distribution pipe bodies (10) without disassembling the steel strips (11); S6: Remove the distribution pipe bodies (10) after cut-to-length cutting from the workbench (1).

6. A fixed-length cutting method for the production of a distribution pipe of a new energy vehicle engine according to claim 5, characterized in that: In the step S3, after the tube bundle formed by the distribution pipe bodies (10) is fixed, adjust the position of the cutting machine to the position where the cutting line is located, and then cut the distribution pipe bodies (10) with different fixed lengths.

7. A method for sizing and cutting an intake manifold for a new energy vehicle engine according to claim 5, characterized in that: In the step S3, drive the second hinge block (4) at the corresponding cutting line to move downward through the telescopic cylinder (7), so that the roller (5) at the cutting line rotates by an angle of 4° - 9°. After one end of the roller (5) deflects, the roller (5) loses contact with the distribution pipe body (10), so that the roller (5) loses the load on the distribution pipe body (10), and there is a gap between the roller (5) and the distribution pipe body (10) at this time.

8. A method for fixed-length cutting in the production of an engine distribution pipe for a new energy vehicle according to claim 5, characterized in that: In the step S6, the distribution pipe bodies (10) are divided into multiple tube bundles after cutting. By adjusting the telescopic cylinders (7) at the positions of the corresponding tube bundles, the output ends of all the telescopic cylinders (7) located here are moved downward, so as to drive the corresponding rollers (5) to rotate. When the rotation angle of the rollers (5) is greater than the inclination angle of the guide plate (9), the tube bundle of this section loses the support of all the rollers (5), so that it falls onto the guide plate (9). At this time, the tube bundle slides on the guide plate (9) by its own gravity and automatically falls onto the collection device beside.

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